$ git clone -n https://src.fedoraproject.org/rpms/subscription-manager.git /var/lib/mock/f41-build-side-1-2810595-32902/root/chroot_tmpdir/scmroot/subscription-manager
Cloning into '/var/lib/mock/f41-build-side-1-2810595-32902/root/chroot_tmpdir/scmroot/subscription-manager'...
$ git fetch origin 440f5f7be106a7a85b15792681e7b10e59182ac2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/subscription-manager
 * [new ref]         440f5f7be106a7a85b15792681e7b10e59182ac2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 440f5f7 Sync packaging from upstream