$ git clone -n https://src.fedoraproject.org/rpms/apitrace.git /var/lib/mock/f45-build-109103-17222/root/chroot_tmpdir/scmroot/apitrace
Cloning into '/var/lib/mock/f45-build-109103-17222/root/chroot_tmpdir/scmroot/apitrace'...
$ git fetch origin 3440c6c34b8317326ce1d3ae79004ebf17ff44a8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/apitrace
 * [new ref]         3440c6c34b8317326ce1d3ae79004ebf17ff44a8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3440c6c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild