$ git clone -n https://src.fedoraproject.org/rpms/libkcddb.git /var/lib/mock/f45-build-16423-486/root/chroot_tmpdir/scmroot/libkcddb
Cloning into '/var/lib/mock/f45-build-16423-486/root/chroot_tmpdir/scmroot/libkcddb'...
$ git fetch origin 99d94d992e6168fa97a99b6b13e804bfadf3c23d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkcddb
 * [new ref]         99d94d992e6168fa97a99b6b13e804bfadf3c23d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99d94d9 26.08.1