$ git clone -n https://src.fedoraproject.org/rpms/qcustomplot.git /var/lib/mock/f45-build-33905-674/root/chroot_tmpdir/scmroot/qcustomplot
Cloning into '/var/lib/mock/f45-build-33905-674/root/chroot_tmpdir/scmroot/qcustomplot'...
$ git fetch origin eeabd2c55da2de3cee533decfbd8ed1c122be216:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qcustomplot
 * [new ref]         eeabd2c55da2de3cee533decfbd8ed1c122be216 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eeabd2c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild