$ git clone -n https://src.fedoraproject.org/rpms/ucarp.git /var/lib/mock/f41-build-1042161-18998/root/chroot_tmpdir/scmroot/ucarp
Cloning into '/var/lib/mock/f41-build-1042161-18998/root/chroot_tmpdir/scmroot/ucarp'...
$ git fetch origin c102942de237aac4aaca16d8d80a8fb8b3bdcdb8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ucarp
 * [new ref]         c102942de237aac4aaca16d8d80a8fb8b3bdcdb8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c102942 Eliminate use of obsolete %patchN syntax (#2283636)