$ git clone -n https://src.fedoraproject.org/rpms/log4c.git /var/lib/mock/f45-build-17517-501/root/chroot_tmpdir/scmroot/log4c
Cloning into '/var/lib/mock/f45-build-17517-501/root/chroot_tmpdir/scmroot/log4c'...
$ git fetch origin c0547f1ca7d66a89c2ab37d002398a15b10072eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/log4c
 * [new ref]         c0547f1ca7d66a89c2ab37d002398a15b10072eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c0547f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild