$ git clone -n https://src.fedoraproject.org/rpms/R-isoband.git /var/lib/mock/f45-build-6170-346/root/chroot_tmpdir/scmroot/R-isoband
Cloning into '/var/lib/mock/f45-build-6170-346/root/chroot_tmpdir/scmroot/R-isoband'...
$ git fetch origin e01f1310d42ec5790afcf9aa3bea153ef41231a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-isoband
 * [new ref]         e01f1310d42ec5790afcf9aa3bea153ef41231a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e01f131 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild