$ git clone -n https://src.fedoraproject.org/rpms/python-fabric.git /var/lib/mock/f45-build-30607-646/root/chroot_tmpdir/scmroot/python-fabric
Cloning into '/var/lib/mock/f45-build-30607-646/root/chroot_tmpdir/scmroot/python-fabric'...
$ git fetch origin 254f7bb0846a595fd9298cd6aa0365514a70bb4b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-fabric
 * [new ref]         254f7bb0846a595fd9298cd6aa0365514a70bb4b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 254f7bb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild