$ git clone -n https://src.fedoraproject.org/rpms/man-db.git /var/lib/mock/f45-build-17983-506/root/chroot_tmpdir/scmroot/man-db
Cloning into '/var/lib/mock/f45-build-17983-506/root/chroot_tmpdir/scmroot/man-db'...
$ git fetch origin 514425d19188d8bce926e8e071261c4f1533c562:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/man-db
 * [new ref]         514425d19188d8bce926e8e071261c4f1533c562 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 514425d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild