$ git clone -n https://src.fedoraproject.org/rpms/nmstate.git /var/lib/mock/f40-build-2659580-66918/root/chroot_tmpdir/scmroot/nmstate
Cloning into '/var/lib/mock/f40-build-2659580-66918/root/chroot_tmpdir/scmroot/nmstate'...
$ git fetch origin a66dfbca3c054cf9b45b829ef4abfb60e5365d4d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nmstate
 * [new ref]         a66dfbca3c054cf9b45b829ef4abfb60e5365d4d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
Updating files:  25% (2/8)
Updating files:  37% (3/8)
Updating files:  50% (4/8)
Updating files:  62% (5/8)
Updating files:  75% (6/8)
Updating files:  87% (7/8)
Updating files: 100% (8/8)
Updating files: 100% (8/8), done.
HEAD is now at a66dfbc Fix cargo vendor license file