$ git clone -n https://src.fedoraproject.org/rpms/xalan-c.git /var/lib/mock/f45-build-38584-725/root/chroot_tmpdir/scmroot/xalan-c
Cloning into '/var/lib/mock/f45-build-38584-725/root/chroot_tmpdir/scmroot/xalan-c'...
$ git fetch origin aad66176c976255d0555e43f4947a42117111284:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xalan-c
 * [new ref]         aad66176c976255d0555e43f4947a42117111284 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aad6617 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild