$ git clone -n https://src.fedoraproject.org/rpms/cryptsetup.git /var/lib/mock/f42-build-side-1-3582403-46884/root/chroot_tmpdir/scmroot/cryptsetup
Cloning into '/var/lib/mock/f42-build-side-1-3582403-46884/root/chroot_tmpdir/scmroot/cryptsetup'...
$ git fetch origin fc6dd0743d0559e6f230f2e099ee6f7df86a7662:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cryptsetup
 * [new ref]         fc6dd0743d0559e6f230f2e099ee6f7df86a7662 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc6dd07 Update to cryptsetup 2.8.0