$ git clone -n https://src.fedoraproject.org/rpms/hostname.git /var/lib/mock/f41-build-808438-145861/root/chroot_tmpdir/scmroot/hostname
Cloning into '/var/lib/mock/f41-build-808438-145861/root/chroot_tmpdir/scmroot/hostname'...
$ git fetch origin 5eef7fa4c05e3972ec99cd2ee522bf4684588969:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hostname
 * [new ref]         5eef7fa4c05e3972ec99cd2ee522bf4684588969 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5eef7fa Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild