$ git clone -n https://src.fedoraproject.org/rpms/xalan-c.git /var/lib/mock/f40-build-2647984-66740/root/chroot_tmpdir/scmroot/xalan-c
Cloning into '/var/lib/mock/f40-build-2647984-66740/root/chroot_tmpdir/scmroot/xalan-c'...
$ git fetch origin 3c013e931d94505b9467ba63cc653695c74c0dee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xalan-c
 * [new ref]         3c013e931d94505b9467ba63cc653695c74c0dee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3c013e9 Rebuild for ICU 74