$ git clone -n https://src.fedoraproject.org/rpms/python-colander.git /var/lib/mock/f45-build-29992-642/root/chroot_tmpdir/scmroot/python-colander
Cloning into '/var/lib/mock/f45-build-29992-642/root/chroot_tmpdir/scmroot/python-colander'...
$ git fetch origin 94efc48f61881bd14d3e7f2d4f330681cdc505a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-colander
 * [new ref]         94efc48f61881bd14d3e7f2d4f330681cdc505a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 94efc48 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild