$ git clone -n https://src.fedoraproject.org/rpms/xmountains.git /var/lib/mock/f39-build-1746269-41411/root/chroot_tmpdir/scmroot/xmountains
Cloning into '/var/lib/mock/f39-build-1746269-41411/root/chroot_tmpdir/scmroot/xmountains'...
$ git fetch origin e8e7a88c0364404f12ea79173e14b3cdee195051:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xmountains
 * [new ref]         e8e7a88c0364404f12ea79173e14b3cdee195051 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e8e7a88 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild