$ git clone -n https://git.cclinux.org/stage/rpms/vulkan-headers.git /var/lib/mock/dist-circle9-build-120517-85180/root/chroot_tmpdir/scmroot/vulkan-headers
Cloning into '/var/lib/mock/dist-circle9-build-120517-85180/root/chroot_tmpdir/scmroot/vulkan-headers'...
$ git fetch origin 0e46772916e96f39ac584f0d4de57ee77d42b168:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/vulkan-headers
 * [new ref]         0e46772916e96f39ac584f0d4de57ee77d42b168 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0e46772 import vulkan-headers-1.3.268.0-1.el9