$ git clone -n https://src.fedoraproject.org/rpms/qqc2-breeze-style.git /var/lib/mock/f40-build-2099230-50441/root/chroot_tmpdir/scmroot/qqc2-breeze-style
Cloning into '/var/lib/mock/f40-build-2099230-50441/root/chroot_tmpdir/scmroot/qqc2-breeze-style'...
$ git fetch origin aba55a584d36c715e98da035141f1d558576726a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qqc2-breeze-style
 * [new ref]         aba55a584d36c715e98da035141f1d558576726a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aba55a5 fix: upload missing sources