$ git clone -n https://src.fedoraproject.org/rpms/libconfig.git /var/lib/mock/f45-build-15993-481/root/chroot_tmpdir/scmroot/libconfig
Cloning into '/var/lib/mock/f45-build-15993-481/root/chroot_tmpdir/scmroot/libconfig'...
$ git fetch origin 56043adbf34f8e4760626f6723002105864f2435:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libconfig
 * [new ref]         56043adbf34f8e4760626f6723002105864f2435 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56043ad Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild