$ git clone -n https://src.fedoraproject.org/rpms/guestfs-tools.git /var/lib/mock/f41-build-1040904-18962/root/chroot_tmpdir/scmroot/guestfs-tools
Cloning into '/var/lib/mock/f41-build-1040904-18962/root/chroot_tmpdir/scmroot/guestfs-tools'...
$ git fetch origin 051756bc5638fc1c421e1c6d25370db59d9edf1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/guestfs-tools
 * [new ref]         051756bc5638fc1c421e1c6d25370db59d9edf1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 051756b OCaml 5.2.0 for Fedora 41