$ git clone -n https://github.com/xcp-ng-rpms/krb5.git /var/lib/mock/v8.3-u-pcoval1-11124-29540/root/chroot_tmpdir/scmroot/krb5
Cloning into '/var/lib/mock/v8.3-u-pcoval1-11124-29540/root/chroot_tmpdir/scmroot/krb5'...
$ git fetch origin eb954cac6ba4bf7c5b2d4c0d02f712fe417f6352:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/krb5
 * [new ref]         eb954cac6ba4bf7c5b2d4c0d02f712fe417f6352 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb954ca bump release for test build