$ git clone -n https://src.fedoraproject.org/rpms/dleyna.git /var/lib/mock/f40-build-2235309-53425/root/chroot_tmpdir/scmroot/dleyna
Cloning into '/var/lib/mock/f40-build-2235309-53425/root/chroot_tmpdir/scmroot/dleyna'...
$ git fetch origin 619b0a42e1e857d4208bf97104c31157dcf86e80:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dleyna
 * [new ref]         619b0a42e1e857d4208bf97104c31157dcf86e80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 619b0a4 Remove some old Provides/Obsoletes