$ git clone -n https://git.cclinux.org/stage/rpms/guestfs-tools.git /var/lib/mock/dist-circle9-build-120605-85265/root/chroot_tmpdir/scmroot/guestfs-tools
Cloning into '/var/lib/mock/dist-circle9-build-120605-85265/root/chroot_tmpdir/scmroot/guestfs-tools'...
$ git fetch origin 17b2f602d6c946f82d094ba2538e4b432178f89b:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/guestfs-tools
 * [new ref]         17b2f602d6c946f82d094ba2538e4b432178f89b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 17b2f60 import guestfs-tools-1.51.6-2.el9