$ git clone -n https://src.fedoraproject.org/rpms/python-autocommand.git /var/lib/mock/f45-build-29436-639/root/chroot_tmpdir/scmroot/python-autocommand
Cloning into '/var/lib/mock/f45-build-29436-639/root/chroot_tmpdir/scmroot/python-autocommand'...
$ git fetch origin 38950eb1e164ea6723df16ca5b0bb37792198113:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-autocommand
 * [new ref]         38950eb1e164ea6723df16ca5b0bb37792198113 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38950eb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild