$ git clone -n https://src.fedoraproject.org/rpms/malcontent.git /var/lib/mock/f45-build-17974-506/root/chroot_tmpdir/scmroot/malcontent
Cloning into '/var/lib/mock/f45-build-17974-506/root/chroot_tmpdir/scmroot/malcontent'...
$ git fetch origin 45ea497bf52b5ce5583f25431f65034c40a98f51:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/malcontent
 * [new ref]         45ea497bf52b5ce5583f25431f65034c40a98f51 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45ea497 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild