$ git clone -n https://src.fedoraproject.org/rpms/python-nbclassic.git /var/lib/mock/f45-build-31705-654/root/chroot_tmpdir/scmroot/python-nbclassic
Cloning into '/var/lib/mock/f45-build-31705-654/root/chroot_tmpdir/scmroot/python-nbclassic'...
$ git fetch origin 563fa7c37cfe6187322da74b6131c25b21c1bd8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-nbclassic
 * [new ref]         563fa7c37cfe6187322da74b6131c25b21c1bd8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 563fa7c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild