$ git clone -n https://src.fedoraproject.org/rpms/python-exdir.git /var/lib/mock/f45-build-30572-646/root/chroot_tmpdir/scmroot/python-exdir
Cloning into '/var/lib/mock/f45-build-30572-646/root/chroot_tmpdir/scmroot/python-exdir'...
$ git fetch origin 9d9b4b88aff27fff79ca87c5172a6fb38a72128b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-exdir
 * [new ref]         9d9b4b88aff27fff79ca87c5172a6fb38a72128b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d9b4b8 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild