$ git clone -n https://src.fedoraproject.org/rpms/libdispatch.git /var/lib/mock/f41-build-856230-167507/root/chroot_tmpdir/scmroot/libdispatch
Cloning into '/var/lib/mock/f41-build-856230-167507/root/chroot_tmpdir/scmroot/libdispatch'...
$ git fetch origin a8cba5052f97373fdcaff6340107c8f6c4bec050:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdispatch
 * [new ref]         a8cba5052f97373fdcaff6340107c8f6c4bec050 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8cba50 Updated to 6.0.1-RELEASE