$ git clone -n https://src.fedoraproject.org/rpms/kappanhang.git /var/lib/mock/f45-build-14565-461/root/chroot_tmpdir/scmroot/kappanhang
Cloning into '/var/lib/mock/f45-build-14565-461/root/chroot_tmpdir/scmroot/kappanhang'...
$ git fetch origin 573c400547d68203fd2f4e0af1e988a3efc213a3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kappanhang
 * [new ref]         573c400547d68203fd2f4e0af1e988a3efc213a3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 573c400 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild