$ git clone -n https://src.fedoraproject.org/rpms/python-paste-script.git /var/lib/mock/f45-build-31892-656/root/chroot_tmpdir/scmroot/python-paste-script
Cloning into '/var/lib/mock/f45-build-31892-656/root/chroot_tmpdir/scmroot/python-paste-script'...
$ git fetch origin 2c4104f3476565db69657f867860002dc6efecd2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-paste-script
 * [new ref]         2c4104f3476565db69657f867860002dc6efecd2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2c4104f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild