$ git clone -n https://src.fedoraproject.org/rpms/gkermit.git /var/lib/mock/f41-build-side-1-2637582-26328/root/chroot_tmpdir/scmroot/gkermit
Cloning into '/var/lib/mock/f41-build-side-1-2637582-26328/root/chroot_tmpdir/scmroot/gkermit'...
$ git fetch origin 8642bbb92ffa5cec908884ad8ddb0f7174bd9869:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gkermit
 * [new ref]         8642bbb92ffa5cec908884ad8ddb0f7174bd9869 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8642bbb convert GPLv2+ license to SPDX