$ git clone -n https://src.fedoraproject.org/rpms/libdbi.git /var/lib/mock/f45-build-16035-481/root/chroot_tmpdir/scmroot/libdbi
Cloning into '/var/lib/mock/f45-build-16035-481/root/chroot_tmpdir/scmroot/libdbi'...
$ git fetch origin 3bace2fa53fa9d9696c882f3f30fc5e91b3a9742:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libdbi
 * [new ref]         3bace2fa53fa9d9696c882f3f30fc5e91b3a9742 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3bace2f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild