$ git clone -n https://src.fedoraproject.org/rpms/kf5-kholidays.git /var/lib/mock/f40-build-2292564-56143/root/chroot_tmpdir/scmroot/kf5-kholidays
Cloning into '/var/lib/mock/f40-build-2292564-56143/root/chroot_tmpdir/scmroot/kf5-kholidays'...
$ git fetch origin 0b3d8dfe970bc64bcbbcd9f60519af8627c03149:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kholidays
 * [new ref]         0b3d8dfe970bc64bcbbcd9f60519af8627c03149 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0b3d8df Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild