$ git clone -n https://src.fedoraproject.org/rpms/calibre.git /var/lib/mock/f40-build-2385547-60489/root/chroot_tmpdir/scmroot/calibre
Cloning into '/var/lib/mock/f40-build-2385547-60489/root/chroot_tmpdir/scmroot/calibre'...
$ git fetch origin d95140acc4e1a687fe041c9c0732f8dabf560d07:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/calibre
 * [new ref]         d95140acc4e1a687fe041c9c0732f8dabf560d07 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d95140a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild