$ git clone -n https://src.fedoraproject.org/rpms/python-doit.git /var/lib/mock/f45-build-30459-644/root/chroot_tmpdir/scmroot/python-doit
Cloning into '/var/lib/mock/f45-build-30459-644/root/chroot_tmpdir/scmroot/python-doit'...
$ git fetch origin 0ca5c58de9bea8b049da82bfb818e8abd1731e98:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-doit
 * [new ref]         0ca5c58de9bea8b049da82bfb818e8abd1731e98 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0ca5c58 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild