$ git clone -n https://src.fedoraproject.org/rpms/nmstate.git /var/lib/mock/f38-build-side-42-init-devel-1391781-30858/root/chroot_tmpdir/scmroot/nmstate
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1391781-30858/root/chroot_tmpdir/scmroot/nmstate'...
$ git fetch origin e8d27ab1c5631c9cccbe6549dfb9085ce48932e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nmstate
 * [new ref]         e8d27ab1c5631c9cccbe6549dfb9085ce48932e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8d27ab [packit] 2.2.15 upstream release