$ git clone -n https://src.fedoraproject.org/rpms/plymouth-kcm.git /var/lib/mock/f42-build-862547-170850/root/chroot_tmpdir/scmroot/plymouth-kcm
Cloning into '/var/lib/mock/f42-build-862547-170850/root/chroot_tmpdir/scmroot/plymouth-kcm'...
$ git fetch origin e6c59408af769f1cc8f7b65ad3eec287284fb5ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plymouth-kcm
 * [new ref]         e6c59408af769f1cc8f7b65ad3eec287284fb5ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6c5940 6.2.4