$ git clone -n https://src.fedoraproject.org/rpms/kf5-libgravatar.git /var/lib/mock/f40-build-786864-134632/root/chroot_tmpdir/scmroot/kf5-libgravatar
Cloning into '/var/lib/mock/f40-build-786864-134632/root/chroot_tmpdir/scmroot/kf5-libgravatar'...
$ git fetch origin 49b0fd3e0eca8762c4a3506bbf5d0cc815a8ccb0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-libgravatar
 * [new ref]         49b0fd3e0eca8762c4a3506bbf5d0cc815a8ccb0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 49b0fd3 23.08.5