$ git clone -n https://src.fedoraproject.org/rpms/feather.git /var/lib/mock/f45-build-8798-396/root/chroot_tmpdir/scmroot/feather
Cloning into '/var/lib/mock/f45-build-8798-396/root/chroot_tmpdir/scmroot/feather'...
$ git fetch origin 7b5c7e9134d32af88d13bbee7cf37025ecd60056:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/feather
 * [new ref]         7b5c7e9134d32af88d13bbee7cf37025ecd60056 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7b5c7e9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild