$ git clone -n https://src.fedoraproject.org/rpms/gappa.git /var/lib/mock/f45-build-9574-406/root/chroot_tmpdir/scmroot/gappa
Cloning into '/var/lib/mock/f45-build-9574-406/root/chroot_tmpdir/scmroot/gappa'...
$ git fetch origin 554cdf71143fdee50d62f50de7412c1d28b65714:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gappa
 * [new ref]         554cdf71143fdee50d62f50de7412c1d28b65714 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 554cdf7 Version 1.8.2