$ git clone -n https://src.fedoraproject.org/rpms/nant.git /var/lib/mock/f41-build-side-1-2969277-35818/root/chroot_tmpdir/scmroot/nant
Cloning into '/var/lib/mock/f41-build-side-1-2969277-35818/root/chroot_tmpdir/scmroot/nant'...
$ git fetch origin 4df3f6edabd83bfeadba6649db62174385c68467:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nant
 * [new ref]         4df3f6edabd83bfeadba6649db62174385c68467 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4df3f6e convert GPLv2+ license to SPDX