$ git clone -n https://git.cclinux.org/stage/rpms/libguestfs.git /var/lib/mock/dist-circle9-build-120318-84997/root/chroot_tmpdir/scmroot/libguestfs
Cloning into '/var/lib/mock/dist-circle9-build-120318-84997/root/chroot_tmpdir/scmroot/libguestfs'...
$ git fetch origin 31f9f76f829e720c43cb394198ed0eafb1a88246:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/libguestfs
 * [new ref]         31f9f76f829e720c43cb394198ed0eafb1a88246 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31f9f76 import libguestfs-1.50.1-7.el9